Boat-chock.



W. S. ROGERS.

BOAT OHOGK. APPLICATION n'LEn YEB.1'7, 1913.

1,068,276. Patented July 22, 1913.

j; 2/ Ill/MENTOR D M/z'ZZz'am 5. Roye'rs /.3 ATTORNEYS cnLummA PLANOGRAPN 20.. WASHINGTON, n. c.

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WILLIAM S. ROGERS, U'F NEWPORT, RHODE IELAND.

BOAT-GHOCIL inseam.

Application filed February 17, 1913.

Specification of Letters Patent.

llateiited July @332, Matti.

Serial No. 18,863.

To all whom it may concern:

Be it known that l, "i VILLIAM S. Rooms, a citizen of the United States, and a resident of Newport, in the county of Newport and State of ltthode lsland, have invented a new and Improved Boat-Chock, of which the following is a full, clear, and eXact description.

'llhis invention relates to ships, and has particular reference to means for supporting life boats upon the upper decks of vessels in connection with the usual clavits or for supporting any other kinds of boats wherever desired.

Among the objects of this invention is to produce a boat support or chock of peculiar nature whereby a life boat, for example, may be operated from the davits and easily and quickly lowered to the gunwale without the necessity of first hoisting the boat in order to clear the chock or enable any portion of the chock to be removed from normal position.

The foregoing and other objects of the invention will hereinafter be more fully described and claimed and illustrated in the drawings forming a part of this specification in which like characters of reference indicate corresponding parts in all the views, and in which Figure l is a front elevation of the check in normal position and indicating a boat in position thereon; Fig. 2 is a. View showing the position of the chock as the boat is being swung outwardly therefrom; Fig. 3 is a plan view of the chock showing in full lines the normal position of the movable part, and in dotted lines its position after being tripped; and Fig. 4: is an end elevation of the check in normal position looking from the gunwale.

'lhe several parts of this device may be made of any suitable materials and the relative sizes and proportions of the same may be varied to correspond with the various forms of boats to be supported thereon without departing from the spirit of the invention hereinafter specifically set fort-h and claimed.

By reference to the drawings it will be noted that this improved chock comprises a main portion 10 secured in a permanent stationary position in any suitable manner as, for instance, upon a pair of stringers 11 extending parallel to each other and longitudinally of the main vessel (not shown). The

bottoms.

upper part of the member 10 is curved as indicated at 10 to correspond with the curvature of the bottom of the boat 12 supported thereon. The outer lower portion 13 of said member is inclined downwardly toward the gunwale, the upper surface 13 of this portion being preferably straight and constituting a slideway for the movable member 1 1 of the chock whose upper surface 14/ is curved to correspond with the curvature 10 aforesaid. A rib 15 is preferably provided along the intermediate portion of the said surface 13, the lower end of the rib terminating adj accnt the extreme outer end of the member 13 and the upper end of the rib abutting against and with its upper surface flush with a ledge 16 which is adapted to receive and support the keel 17 of the boat, whereby the weight of the boat is properly distributed among the several parts of the check, and furthermore, whereby the effect of the chock upon the bottom of the boat will be more or less distributed or equalized along the length of the bottom of the boat, it being a well known fact that for a boat to rest for a long time upon a pair of checks in the usual way causes a tendency for the checks to distort the boat The aforesaid movable member 14; is grooved as indicated at 18 to correspond with the cross section of the rib 15 which received within said groove. 'lhese features therefore provide for reliabl securing the movable member 14- upon the stationary member hence preventing any premature or undesirable movement of one with respect to the other, but not interfering in any way with the desired slidable movement of the member 14L along the rib.

Any suitable means may beprovidcd to control the movement of the member 1a slidably along the rib 15 and stationary member. The means ll show and prefer to employ for this purpose consists of a rock shaft 18 journaled in a keeper 19 secured to the station member 10 substantially midway bet-ween the inner end thereof and the ledge 1G. The outer end of the rock shaft is jouriniled in a pair of keepers F20 slightly spaced fron each other and c ied by the member 14;. it ling-oi. S21 is rigidly secured to this end of the rock shaft and extends thence outwardly at a right angle therefrom between the keepers 20, said keepers lying substantially close on opposite sides of said finger. l l hen the device is in normal position the finger 21 extends outwardly substantially perpendicular to the vertical face of the member 14. Said finger therefore serves at least two purposes, namely, to maintain the proper connection between the rock shaft and the movable member 14, and secondly, it serves as a means to limit the rotation of the rock shaft. The inner end of the rock shaft is provided with a crank 22 arranged preferably at a right angle to the main portion thereof and adapted to interlock with the end 23 of the fixed mem ber 10, said end 23 being inclined outwardly slightly from the vertical as shown in Figs. 1 and 2. A keeper 24 is secured to the end 23 preferably in the horizontal plane of the rock shaft and it serves at least two purposes, namely, as a stop limiting the rotation of the rock shaft when turned into locking position, and secondly, as a wear plate normally resisting the outward thrust upon or through the rock shaft. The said crank terminates in its free end in a handle 25 which is bent from the crank 22 in a peculiar manner, the handle lying in a plane parallel to the axis of the rock shaft but being bent in said plane at an oblique angle with respect both to the vertical plane passing through the crank 22 and the horizontal plane passing through the rock shaft. By this peculiar form of handle I secure several advantages which will appear in the following description of operation. With the chock set, as shown in Fig. 1, in normal position supporting the boat, the operator, in order to lower the boat, will grasp the handle, pulling up on the same and thereby swinging the rock shaft through an angle of substantially 90 degrees until the finger 21 strikes the face of the member 14, as shown in dotted lines in Fig. 1. The operator then having grasped the usual block and tackle of the davit to control the subsequent movement of the boat will kick against the handle 25, the force of such operation being transmitted through the handle, the crank 22 and longitudinally of the rock shaft, starting the movable member 14 outward and downward upon the rib. Furthermore, the force of the operators kick or thrust directed against the handle, by virtue of the angle of inclination of the handle, will forcibly and positively tilt the movable member 14 laterally, throwing it off of the rib and out of the way of the boat keel, the movable member being limited in its detached movement by the crank 22 coming into engagement with the keeper 19 and the member 14 lying well out of the way, as shown in Fig. 3 in dotted lines. lVhile restoring the parts with the boat in normal position, the chock member 14 may be put upon the incline 13' by any suitable means and then drawn upwardly into place by draft upon the rock shaft which will be given sufficient rotation to cause the crank 22 to glide downwardly over the incline of the end 23 whereby, through a sort of cam action, the rotation of the crank will snugly bind the member 14 in locking position against the ledge 16, the crank coming into engagement with the keeper 24 as above described. The rear face of the member 14 is preferably beveled as indicated at 14 so as to reduce the possibility of engagement herewith of the boat keel 17 when the movable member is thrust from the normal position.

Having thus described my invention, I claim as new and desire to secure by Letters Patent In a boat chock, the combination of a main stationary member, a movable member supported normally thereupon, and means to control the movement and position of the movable member with respect to the stationary member, said means comprising a rock shaft journaled upon both of said members and slidable along one of them, said rock shaft having at one end a crank interlocking with the end of the member along which the rock shaft is slidable.

2. In a boat check, the combination of a main stationary member, a movable member supported normally thereupon, and means to control the movement and position of the movable member with respect to the stationary member, said means comprising a rock shaft ournaled upon both of said members, means adjacent the movablemember serving to prevent the longitudinal movement of the rock shaft with respect to said movable member and to limit the rotation of the same in one direction, said rock shaft and movable member being movable longitudinally with respect to the main stationary member, said rock shaft having a crank cooperating with the stationary member to firmly lock the parts in normal position, and a keeper secured to such member and limiting the rotation of the rock shaft in the other direction.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

NILLIAhI S. ROGERS.

Witnesses GEO. L. BEELER, PHILIP D. RoLLHAUs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

